Which characteristic describes DDR3 SDRAM?

Which characteristic describes DDR3 SDRAM?

• chips that run at clock speeds of 800 MHz and have a connector with 240 pins
• an individual memory chip that has dual rows of pins used to attach it to the motherboard
• a small circuit board that holds several memory chips and has a 30- or 72-pin configuration
• chips specifically designed for video graphics that are used in conjunction with a dedicated GPU